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    <title>ShellCheck: SC2280 – `$0` can't be assigned this way, and there is no portable alternative.</title>
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    <h1>SC2280 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2280">See this page on GitHub</a>
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    <h2
id="0-cant-be-assigned-this-way-and-there-is-no-portable-alternative"><code>$0</code>
can't be assigned this way, and there is no portable alternative.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2280.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="co">#!/bin/sh</span></span>
<span id="cb1-2"><a href="SC2280.html#cb1-2" aria-hidden="true" tabindex="-1"></a><span class="va">$0</span><span class="ex">=myname</span></span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<p><code>$0</code> can not be changed in a portable way.</p>
<h3 id="rationale">Rationale:</h3>
<p>You appear to be trying to assign a new value to <code>$0</code> in a
<code>sh</code> script.</p>
<p>There is no portable way to do this. Write around it, or switch to
Bash.</p>
<h3 id="exceptions">Exceptions:</h3>
<p>If you instead wanted to compare the value of <code>$0</code>, use a
comparison like <code>[ "$0" = "myname" ]</code>.</p>
<h3 id="related-resources">Related resources:</h3>
<ul>
<li>Help by adding links to BashFAQ, StackOverflow, man pages, POSIX,
etc!</li>
</ul>
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    <p style='font-size: 80%'><a href="../index.html">ShellCheck</a> is a static analysis tool for shell scripts. This page is part of its documentation.</p>
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